RdioWe're making a music service that takes the work out of deciding what to play next — follow friends and people with great taste in music, get inspired by what they're playing, and listen to their playlists.in Musicwith musiconlineserversocialby 4 users

Tornado Web ServerTornado is an open source version of the scalable, non-blocking web server and tools that power FriendFeed. The FriendFeed application is written using a web framework that looks a bit like web.py or Google's webapp, but with additional tools and optimizations to take advantage of the underlying non-blocking infrastructure.in Softwarewith facebookframeworkopensourcepythonserverwebby 2 users